Tunable Optical Properties of Chromophores Derived from Oligo(p-phenylene vinylene)
journal contributionposted on 21.05.2010 by Audrey Guerlin, Frédéric Dumur, Eddy Dumas, Fabien Miomandre, Guillaume Wantz, Cédric R. Mayer
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A series of 11 symmetric push−pull chromophores consisting of electron-accepting groups connected through a central π-conjugated system derived from oligo(p-phenylene vinylene) (OPV) were designed and synthesized. Electronic and spectroscopic properties were investigated by UV−visible absorption, fluorescence spectroscopy, and cyclic voltammetry. By finely tuning the electron-withdrawing ability of the acceptors as well as the length of the π-conjugated spacer, a wide range of dyes exhibiting strong absorption and emission were obtained.